In 2006 Belliveau successfully ran for the Nova Scotia New Democratic Party nomination in the constituency of Shelburne.
[6] On February 4, 2021, Belliveau announced he was seeking the Progressive Conservative nomination to run in his former seat as MLA in the reorganized constituency of Queens-Shelburne.
[7][8] In the previous year, Belliveau had re-entered the public view over the 2020 Mi'kmaq lobster dispute, at the time calling for a one-year pause to the Miꞌkmaq moderate livelihood fishery organized by the Sipekneꞌkatik First Nation.
Belliveau was quoted as saying, "I can assure you the commercial industry feels they have not had an opportunity to have their voices heard at the table," indicating that he believed Mi'kmaq livelihood fishing affirmed under The Marshall Decision must be tied to the commercial fishing season.
[9] Acknowledging his shift from the NDP to Conservative, Belliveau noted he believed the switch would be more likely to result in a win for him, and stated that he was unhappy with the Federal NDP's stance on the ongoing fisheries issue,[10] which contrary to Belliveau, supports an indigenous moderate livelihood fishery apart from the commercial season.